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Get All AWS Certified SysOps Administrator - Associate Exam Questions with Validated Answers
Vendor: | Amazon |
---|---|
Exam Code: | SOA-C02 |
Exam Name: | AWS Certified SysOps Administrator - Associate |
Exam Questions: | 557 |
Last Updated: | October 7, 2025 |
Related Certifications: | Amazon Associate, AWS Certified SysOps Administrator Associate |
Exam Tags: | Associate Level Amazon Systems Administrators and Engineers |
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[Monitoring, Reporting, and Automation]
A company hosts an internal application on Amazon EC2 On-Demand Instances behind an Application Load Balancer (ALB). The instances are in an Amazon EC2 Auto Scaling group. Employees use the application to provide product prices to potential customers. The Auto Scaling group is configured with a dynamic scaling policy and tracks average CPU utilization of the instances.
Employees have noticed that sometimes the application becomes slow or unresponsive. A SysOps administrator finds that some instances are experiencing a high CPU load. The Auto Scaling group cannot scale out because the company is reaching the EC2 instance service quota.
The SysOps administrator needs to implement a solution that provides a notification when the company reaches 70% or more of thte EC2 instance service quota.
Which solution will meet these requirements in the MOST operationally efficient manner?
To monitor and receive alerts when the EC2 instance service quota usage reaches 70% or more:
Service Quotas Console: Navigate to the Service Quotas console within AWS and identify the specific quota for EC2 instances.
Create a CloudWatch Alarm: Directly from the Service Quotas console, set up a CloudWatch alarm for the EC2 instance quota metric. Configure the alarm to trigger when the quota utilization reaches or exceeds 70%.
Notification Setup: Link this alarm to an Amazon SNS topic that will send a notification to relevant stakeholders or systems when the quota usage threshold is breached.
This method provides an automated, straightforward way to monitor resource limits and ensures that stakeholders are promptly notified, enabling them to take proactive measures to manage the quota and prevent service disruption.
[Security and Compliance]
A company needs to restrict access to an Amazon S3 bucket to Amazon EC2 instances in a VPC only. All traffic must be over the AWS private network.
What actions should the SysOps administrator take to meet these requirements?
To restrict access to an Amazon S3 bucket to Amazon EC2 instances in a VPC only, and ensure all traffic is over the AWS private network, the SysOps administrator should create a VPC endpoint for the S3 bucket and create an S3 bucket policy that conditionally limits all S3 actions on the bucket to the VPC endpoint as the source.
Create a VPC Endpoint for S3:
Open the VPC console.
Choose 'Endpoints' and then 'Create Endpoint.'
Select the service name 'com.amazonaws.
[region].s3.'
Choose the VPC and the subnets where the EC2 instances reside.
Configure the route tables to include the VPC endpoint.
Create an S3 Bucket Policy:
Open the S3 console and select the bucket.
Go to the 'Permissions' tab and edit the bucket policy.
Add a condition to the policy to allow access only from the VPC endpoint.
Example policy:
{
'Version': '2012-10-17',
'Statement':
[
{
'Effect': 'Allow',
'Principal': '*',
'Action': 's3:*',
'Resource':
[
'arn:aws:s3:::your-bucket-name',
'arn:aws:s3:::your-bucket-name/*'
],
'Condition': {
'StringEquals': {
'aws:sourceVpce': 'vpce-12345678'
}
}
}
]
}
Amazon S3 VPC Endpoints
Amazon S3 Bucket Policies
[Security and Compliance]
A company's SysOps administrator deploys a public Network Load Balancer (NLB) in front of the company's web application. The web application does not use any Elastic IP addresses. Users must access the web application by using the company's domain name. The SysOps administrator needs to configure Amazon Route 53 to route traffic to the NLB.
Which solution will meet these requirements MOST cost-effectively?
To route traffic to the Network Load Balancer (NLB) using Amazon Route 53 cost-effectively, creating an alias record is the best solution.
Alias Record:
Alias records are a Route 53-specific extension to DNS functionality.
They provide a way to map a domain name to an AWS resource, such as an NLB, without incurring additional charges.
Steps to Implement:
Open the Route 53 console.
Select the hosted zone and choose 'Create Record Set.'
Choose 'Alias' and select the NLB from the drop-down list.
Creating Alias Records
[Deployment, Provisioning, and Automation]
Users are reporting consistent forced logouts from a stateful web application. The web application Is hosted on Amazon EC2 instances that are in an Auto Scaling group. The instances run behind an Application Load Balancer (ALB) that has multiple target groups with one listener rule The ALB is configured as the origin in an Amazon CloudFront distribution.
Which combination of actions should a SysOps administrator take to resolve the logout problem? (Select TWO.)
Problem Analysis:
Users experience consistent forced logouts, indicating session data is not maintained properly.
Causes may include issues with session persistence between CloudFront, ALB, and the backend servers.
Action: Configure Cookie Forwarding in CloudFront:
CloudFront must forward cookies to maintain session state. Without forwarding cookies, session-specific data cannot reach the backend.
Update the Cache Behavior Settings in CloudFront:
Go to the CloudFront distribution settings.
In Cache Behaviors, select Forward Cookies.
Specify the relevant cookies required by the application.
Action: Enable Group-Level Stickiness in ALB:
Group-level stickiness ensures that a user's session consistently maps to the same backend server, preventing session disruption.
Steps:
Open the ALB Console.
Navigate to the Listener Rules.
Enable Group-Level Stickiness for the target groups under the listener rule settings.
Why Other Options Are Incorrect:
A: Changing to the least outstanding requests algorithm will not address session stickiness issues.
C: Forwarding headers does not resolve session-specific problems caused by cookies not being forwarded.
E: Weighted target groups manage traffic distribution but do not address session persistence.
Amazon CloudFront Cookie Forwarding
ALB Sticky Sessions Documentation
[Networking and Content Delivery]
A company has an Amazon Route 53 private hosted zone in its AWS account. The private hosted zone is connected to the company's on-premises data center by an AWS Direct Connect connection. Virtual machines (VMs) in the on-premises data center need to resolve DNS queries that exist in the private hosted zone.
What is the MOST operationally efficient solution that meets this requirement?
To enable on-premises resources to resolve DNS queries for records in a Route 53 private hosted zone, you can set up a Route 53 Resolver inbound endpoint. This allows DNS resolvers on your on-premises network to forward DNS queries to Route 53 Resolver via the inbound endpoint over the AWS Direct Connect connection.
By configuring your on-premises DNS resolvers to forward queries to the IP addresses of the inbound endpoint, your on-premises VMs can resolve DNS records in the private hosted zone efficiently and securely.
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